Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Fine microparticles of poly(p-phenylenediamine) (PpPD) and poly(m-phenylenediamine) (PmPD) were directly synthesized by a facile oxidative precipitation polymerization and their strong ability to adsorb lead ions from aqueous solution was examined. It was found that the degree of adsorption of the lead ions depends on…
We exploit the power of microrheology to measure the viscoelasticity of entangled F-actin solutions at different length scales from 1 to 100 microm over a wide frequency range. We compare the behavior of single probe-particle motion to that of the correlated motion of two particles. By varying the average length of th…
Two hydrogen ordered phases of ice were prepared by cooling the hydrogen disordered ices V and XII under pressure. Previous attempts to unlock the geometrical frustration in hydrogen-bonded structures have focused on doping with potassium hydroxide and have had success in partially increasing the hydrogen ordering in…
We report on rheological properties of a dispersion of multiwalled carbon nanotubes in a viscous polymer matrix. Particular attention is paid to the process of nanotubes mixing and dispersion, which we monitor by the rheological signature of the composite. The response of the composite as a function of the dispersion…
There exist two types of polyelectrolyte multilayers: those whose thickness increases linearly with the number of deposition steps, which are nicely structured, and those whose thickness increases exponentially, which resembles hydrogels. This simple picture has recently slightly evolved with the finding that some exp…
Single-walled carbon nanotubes (SWCNTs) have been shown to exhibit excellent electrical properties, such as ballistic transport over several hundred nanometers at room temperature. Field-effect transistors (FETs) made from individual tubes show dc performance specifications rivaling those of state-of-the-art silicon d…
With the perovskite multiferroic $R\mathrm{Mn}{\mathrm{O}}_{3}$ $(R=\mathrm{Gd},\mathrm{Tb},\mathrm{Dy})$ as guidance, we argue that the Dzyaloshinskii-Moriya interaction (DMI) provides the microscopic mechanism for the coexistence and strong coupling between ferroelectricity and incommensurate magnetism. We use Monte…
In this letter, a potential application of practically dispersive double negative medium substrates on the dimensions miniaturization of patch antennas is explored. By using the transmission line theory, it is shown that the use of such a practically dispersive double negative material could not offer such a broadband…
This paper introduces a simplified vector model based on the Preisach approach that intrinsically satisfies loss and saturation properties. It is able to reproduce isotropic and nonisotropic behavior. The main idea is to compute the magnetization vector in two steps independently, amplitude and phase. The first one is…
CPW transmission line metamaterials with simultaneous loading of series-C and shunt-L lumped elements in periodical intervals are thoroughly investigated using a self-calibrated method of moments (MoM). Two effective per-unit-length parameters, i.e., propagation constant and characteristic impedance, are numerically e…
We report on the performance of a multi-purpose strain sensor for embedded carbon nanotubes (CNT). The sensor is based on a microactuator operable in various environments including in situ scanning electron microscopy (SEM) and Raman microscopy from the same tube. The fabrication of the MEMS was outsourced to a foundr…
An inductance determination method that can be based on both experiments and calculations is discussed in this paper. The inductances of a four-quadrant transducer (4QT) prototype machine were measured and calculated with the two-dimensional time-stepping finite-element method (FEM), and the measured and calculated re…
A transient electric field takes place in gas-insulated switch-gears (GIS) while lightning impulse voltage is imposed on it. Taking permittivity, conductivity, and polarization loss into consideration, the differential equations of transient field are deduced, where the response caused by lightning impulse voltage is…
In this paper, practical left-handed (LH) metamaterials known as composite right/left-handed (CRLH) metamaterials for microwave devices are discussed. In particular, recent advances and novel devices based on the CRLH metamaterial at the authors' research lab are presented.
Abstract Poly(vinyl alcohol)‐ graft ‐poly(1,4‐dioxan‐2‐one) (PVA‐ g ‐PPDO) with designed molecular structure was synthesized by a solid‐state polymerization. The solid‐state copolymerization was preceded by a graft copolymerization of PDO initiated with PVA as a multifunctional initiator, and Sn (Oct) 2 as a coininiti…
Phage display has been used to find an amino acid sequence that shows binding affinity for surface defects in germanium. A general approach called “diffuse selection” is employed to find consensus peptide sequences (see figure) demonstrating binding specificity for highly defective crystal surfaces versus non-defectiv…
Representation of multi-winding transformers by equivalent circuits has been recently improved and so it is for the identification of its components. In this paper, focus is on magnetic coupling with its related losses. A general method, based on impedance measurements, is used to determinate inductances, coupling rat…
The graft copolymerization of acrylonitrile (AN) onto butadiene rubber (BR) was carried out in toluene at 80°C, using dibenzoyl-peroxide (BPO) as initiator. The synthesized poly acrylonitrile-grafted-butadiene rubber (AN-g-BR) was characterized by N% elemental analysis and Fourier-transform infrared (FT-IR) spectrosco…
To solve a magnetodynamics problem, two potential formulations can be used. In the case of the A-psi formulation, the voltage at the terminals of a conductor is naturally imposed, which is not the case for the current flowing through the conductor. On the contrary, for the T-Omega formulation, the current can be natur…
This paper describes the utilization of two-dimensional vector magnetic property for the advanced magnetic field analysis which is called the magnetic characteristic analysis. There are some possibilities to develop new applications using the magnetic characteristic analysis and the vector magnetic property. This is d…